The king of Bhutan, Jigme Khesar Namgyel arrived in New Delhi to a red carpet welcome but the visit came at a time Bhutan is engaged in crucial border talks with China. Last month, Bhutan and China held the 25th round of bilateral border talks in Beijing; and the developments have led to some unease in New Delhi. India has cast a wary eye on revived Bhutan-China boundary talks. Here are the details.